Title :
A study of measurement the load impedance mismatch
Author :
Soosul Hwang ; Sung-Yong Hong
Author_Institution :
Korea Aerosp. Res. Inst., Daejeon, South Korea
Abstract :
This paper presents a simple method for measurement the unknown load impedance mismatch between amplifier and antenna. The method to measure load impedance mismatch consists of sections of transmission line and voltage measurements at appropriate locations along the transmission line. Simulation is performed using Agilent´s ADS software tool to determine the physical dimensions and the circuit characteristics. And AD834 quadrant multiplier is used to voltage sensor for measuring the 3-point voltage on sectioned transmission line. Simulation and test results show good agreement with theoretical predictions.
Keywords :
amplifiers; antennas; electric impedance measurement; electric sensing devices; multiplying circuits; transmission line theory; voltage measurement; 3-point voltage measurement; AD834 quadrant multiplier; Agilent ADS software tool; amplifier; antenna; circuit characteristics; load impedance mismatch measurement; sectioned transmission line; voltage sensor; Antenna measurements; Impedance; Impedance measurement; Power transmission lines; Prediction algorithms; Transmission line measurements; Voltage measurement; impedance mismatch; impedance selection algorithm; sectioned transmission line; voltage sensor;
Conference_Titel :
Intelligent Radio for Future Personal Terminals (IMWS-IRFPT), 2011 IEEE MTT-S International Microwave Workshop Series on
Conference_Location :
Daejeon
Print_ISBN :
978-1-4577-0961-6
Electronic_ISBN :
978-1-4577-0963-0
DOI :
10.1109/IMWS2.2011.6027206
